edit macro to copy and past only unique values

Hi Experts

How wouldyou edit the following macro to so when the data is copy across from file on c:\....it only copies across unique values....

(each workbook has one worksheet only) which has the same name as the master file - which is open when the macro is run....

Sub Conso()
 
    Dim wbDst As Workbook
    Dim wbSrc As Workbook
    Dim wsSrc As Worksheet
    Dim wsDst As Worksheet
    Dim rngDst As Range
    Dim strFilename As String
    Dim StrPath As String
   
    Application.DisplayAlerts = False
   
           'Update File Path To Suite Requirments - Test Path Only
           
           StrPath = "C:\OutlookAttachments\CMU Attachments\"
           
           Set wbDst = ThisWorkbook
           
           Set wsDst = wbDst.Worksheets("ABC")
               
           Set rngDst = wsDst.Range("M17")
               
                strFilename = Dir(StrPath & "*.xlsm")
               
                While strFilename <> ""
               
                If strFilename <> wbDst.Name Then
               
                    Set wbSrc = Workbooks.Open(StrPath & strFilename, UpdateLinks:=3)
                   
                    Set wsSrc = wbSrc.Worksheets("ABC")
                   
                    With wsSrc
                        .Range("M17", .Range("M" & .Rows.Count).End(xlUp).Offset(0, 31)).Copy rngDst
                    End With
                   
                    Set rngDst = wsDst.Range("M" & Rows.Count).End(xlUp).Offset(0)
                   
                wbSrc.Close
                   
                    'wsDst.Range("M17:AR17").Delete xlShiftUp
              End If
           
            strFilename = Dir()
           
     Wend
 
End Sub